Description
Authentication bypass issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to alter critical configuration settings without authentication.
Affected products
buffalo: wzr-s900dhp firmware; buffalo: wzr-s900dhp; buffalo: wcr-1166dhpl firmware; buffalo: wcr-1166dhpl; buffalo: wsr3600be4-kh firmware; buffalo: wsr3600be4-kh; buffalo: wsr3600be4p firmware; buffalo: wsr3600be4p; buffalo: wxr-1750dhp firmware; buffalo: wxr-1750dhp; buffalo: wxr-1750dhp2 firmware; buffalo: wxr-1750dhp2; buffalo: wxr18000be10p firmware; buffalo: wxr18000be10p; buffalo: wxr-1900dhp firmware
References2
- www.buffalo.jp/news/detail/20260323-01.html Vendor Advisory
- jvn.jp/en/jp/JVN83788689/ Third Party Advisory
Metrics
- CVSS 4.0
-
8.7
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 31 · as of 12 November 2026
- CWE
- CWE-288
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.